Apparatus for the mixture in predetermined proportions of yeasts and an accelerating mixture.



J. A. STEVENSON.

APPARATUS FOR THE MIXTURE IN PREDETERMINED PROPORTIONS 0F YBASTS AND ANAGGELERATING MIXTURE.

APPLIOATION FILED FEB. 27, 1912.

Patented Apr. 29, 1913.

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T'I% PATNT @FFIfiE.

JOHN ATHERTON STEVENSON, 0F ACTON, ENGLAND.

APPARATUS FOR THE MIXTURE IN PREDETEBMINED PROPORTIONS OF xnas'rs AND ANACCELERA'IING MIXTURE.

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To all whom it may concern:

Be it known that I, JOHN ATHnRroN STEVENSON, subject of the King ofGreat Britain and Ireland, residing at 6 Malvern Villas, Acton, W., inthe county of Middlesex, England, have invented new and usefulImprovements in Apparatus for the Mixture in Predetermined Proportionsof Yeasts and an Accelerating Mixture, of which the following is aspecification.

My invention relates to mixing apparatus for the treatment offermentable substances, viz :yeasts of all descriptions and anaccelerating mixture, and has for its object the mixing or treatment indefinite proportions of such substances in a fiuid condition, in orderto incorporate at once with the said yeast any accelerating agent, suchfor instance as sugar, malt extract, and the like, which latter agentincreases the fermentability of the mixture, when the fermentation is toultimately take place, after the mixture has been put on the market, butwhich during the time between incorporation and the time of designedultimate fermentation no operative efiect of the accelerating agent cantake place.

My invention consists in placing separately under hydrostatic pressurethe fermentable substance and the accelerating agent and delivering themin a proportionate amount into a compressing device adapted to get ridof all the liquid from the compressed substance after the propercompression has taken place, in order that a dry product may be finallyobtained, which will contain latent fermentability capable of beingbrought into action under heat and moisture.

I use hydrostatic pressure obtained by heightened sources of supplyconsisting of two elevated tanks each containing separately two liquidsubstances. In this case each substance is under a constant head and theultimate mixture can, be regulated in the discharge pipes from thesources of supply to make a proportionate mixture in a mixing device andtaken from the said mixing device by a pump to a common pipe leading tothe compression device.

In order that the invention may be the better understood I will nowproceed to describe the same, in relation to the accompanying drawing,reference being had to the letters marked thereon.

Specification of Letters Patent.

Application filed February 27, 1912.

Patented Apr. 29, 1913.

Serial No. 680,251.

Thefigure is a part sectional view in elevation of an apparatus formixing two materials by hydrostatic pressure.

In the drawing there are two separate tanks at and (Z, each. containingone of the two substances that are to be mixed. The pipes 72 and 0 leadfrom these tanks and are connected to an outer chamber 39 having aninternal pipe 9 which is a continuation of the pipe 0. The pipe 0 isprovided with a scaled valve 1* so as to proportionate the flow,produced by the head from the tanks at and (Z, of one substance to theother substance. The substances so delivered are thus proportionatelymixed in the lower portion of the mixing device p where they aredelivered on to an agitator formed of a vertical shaft p fitted withhorizontal mixers, the lower part of shaft 29 being brought through astuffing box and having a driving pulley 79 outside, which can be drivenby any suitable engine or shaft. The mixture thus formed passes by theexit 7 to a pump Z), which when operated by the handle 0 ejects themixed products by the pipe 7 to the filter press 9 where the mixture issubjected to pressure which causes the liquid in the mixture to beremoved.

Having thus fully described my invention I claim as new and desire tosecure by Let ters Patent 1. Apparatus for mixing yeast with anaccelerating mixture in definite proportions, consisting of thecombination of two sepa rate sources of supply placed at a height, amixing apparatus, a filter press, pipes from the said sources of supplyconveying their contents by gravity to the said mixing apparatus, one ofthe said pipes being provided with adjustable means to proportion therelative flow of the said substances to each other, and meanscommunicating respectively with said mixing apparatus and with saidfilter press for further mixing and ejecting the mixture into the saidfilter press.

2. Apparatus for mixing yeast with an accelerating mixture in definiteproportions, consisting of the combination of two separate tanks placedat a height, a mixing device, pipes from the said tanks communicatingwith said mixing device, the end of one of the said pipes being placedwithin the said mixing device, one of the said pipes being fitted with amarked valve to adjust its flow lOO to the amount of flow in the otherpipe, In testimony whereof I have signed my 'sald mlxmg devlce includingan agitator, a name to this speclfication 1n the presence of pump havlnginlet connection with sald mixtwo subscrlblng wltnesses.

ing device, and a filter press connected with JOHN ATHERTON STEVENSON. 5the outlet of said pump, the pump drawing Witnesses:

the mixed product and ejecting it into the JOHN C. F ELL,

said filter press. CHARLES J. R. BULLOUGH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, G.

